An 8 kg nugget from Victoria that was cut in two and had a thin slice

A study of the characteristics of gold nuggets from around Australia revealed that they formed at high temperatures. Since these temperatures do not occur at the surface, the nuggets must have originated deep underground. Previously, it had been thought that gold nuggets formed in place, where they were found, either precipitated from fluids or grown from microbial action. Their presence near the surface is the result of geological process and weathering over vast periods of time.

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<table style="border:1px solid;padding:2px; width:310px;" ><tr><td><a href="http://scienceimage.csiro.au/image/10458/"><img src="http://scienceimage.csiro.au/images/embed/300_0_NM11230.jpg" width="300" alt="An 8 kg nugget from Victoria that was cut in two and had a thin slice" style="margin: 0 0 5px 0; border: 0px;"></a><br/><a href="http://scienceimage.csiro.au/image/10458/">An 8 kg nugget from Victoria that was cut in two and had a thin slice</a><br />by CSIRO</td></tr></table>